The implementation is in a very early stage and it needs some tweaking to get it to work. First of all a user should be running the dev version of the OS. In order to change the channel, go to the ‘wrench’ icon of Chrome and then choose settings. Here go to the ‘Help’ option and clcik on More Info. Now you can see the channels, you can choose ‘dev’ from the drop down menu. Now restart your Chromebook to upgarde to the dev channel. Once it’s done, open the browser and paste in the URL:

chrome://flags/

On this page just go ahead and enable ‘quick-office-editing‘ flag. Now you are good to go.

Now you will be able to edit docx, and xlsx files. If you come across any bugs, you can file them here.